update .test_config
diff --git a/.test_config b/.test_config
index e4477e8..7531964 100644
--- a/.test_config
+++ b/.test_config
@@ -1,5 +1,5 @@
 {
   "test_package": {
-    "platforms": ["dart-vm"]
+    "platforms": ["vm", "dartium"]
   }
 }